mirror of https://github.com/apache/activemq.git
70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <sstream>
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#include "Sem.h"
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using ActiveMQ::Semaphore;
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using std::string;
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using std::stringstream;
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Semaphore::Semaphore(unsigned int defvalue) {
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#ifdef __APPLE__
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sem_ = sem_open(getName_().c_str(), O_CREAT | O_EXCL, 700, defvalue);
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#else
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sem_ = new sem_t();
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sem_init(sem_, 0, defvalue);
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#endif
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}
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void
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Semaphore::post() {
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sem_post(sem_);
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}
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void
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Semaphore::wait() {
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sem_wait(sem_);
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}
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/* static */
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string
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Semaphore::getName_() {
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stringstream ss;
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ss << getpid() << ":" << ++counter_;
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return ss.str();
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}
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/* static */
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int
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Semaphore::counter_ = 0;
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Semaphore::~Semaphore() {
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#ifdef __APPLE__
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sem_close(sem_);
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#else
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sem_destroy(sem_);
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delete sem_;
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#endif
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}
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